Tamara L. Siuda (born July 19, 1969)[5] is an American author, Egyptologist,[6] and Coptologist.[7] She is the founder and current spiritual leader of Kemetic Orthodoxy and the House of Netjer Temple.[2] She maintains a blog under the name Mambo Chita Tann (Mambo T), where she writes about Haitian Vodou.[8]

Siuda's involvement with the Kemetic religion began in 1989, when she founded Kemetic Orthodoxy in her college dorm room.[11] She reports that she had previously had an experience during a Wiccan initiation ritual in which she was called by the ancient Egyptian deities to their worship. After that experience, she left Wicca, and began study and worship in ancient Egyptian religion with friends and students.[12] In 1993, this group of people had grown substantially, and gained legal recognition in the state of Illinois as the House of Netjer Kemetic Orthodox Temple. In 1999, the House of Netjer, and Kemetic Orthodoxy, was granted nonprofit 501(c)(3) status by the federal government.[9]

In October 1996, having received, according to her testimony, divine approval via oracles and ritual, Siuda traveled to Egypt and claims to have undergone coronation rituals to assume the religious title of Nisut, or Pharaoh.[9][2] In this capacity, she is considered by her followers to be the vicar of a divine spirit,[13] and is recognised by her followers to be the current incarnation of the kingly ka, or invested spirit of the Egyptian god Horus.[2] As Nisut, Siuda provides spiritual guidance and leadership to the members of Kemetic Orthodoxy.